Cushioned dished seat pad with waterfall front Contoured backrest for added comfort Twin lever mechanism for gas lift and backrest tilt control Height-adjustable backrest Backrest angle adjustment PCB- permanent contact backrest Optional armrests Recommended maximum weight: 150kg Recommended usage: 8 hours 2 Year Warranty 2 Lever High Back PCB is operator seating with inherent good quality built in. Our 2 Lever PCB chairs include dished seats, contoured backrests, waterfall fronts, gas lift height adjustment and backs that adjust for height and back angle.